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eduard
4 years ago
9

An object moves at a constant rate. The graph shows the object's height at different times. Which equation represents the situat

ion?
A. y = −15x 900
b. y = −15x − 900
c. y = 15x − 900
d. y = 15x 900
Mathematics
2 answers:
pochemuha4 years ago
6 0
The correct answer is 
(A) 
y=-15x+900
zlopas [31]4 years ago
3 0
<span>d. y = 15x 900</span>

Although you do not give the rates I assume the answer is D as it is the only positive multiplication. You cannot have negative height.
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Step-by-step explanation:

I guess you need to know the number of words in Hungarian and in Polish.

Let H be the words he said in Hungarian, and P the words he said in Polish.

We are told that Sakura uttered a total of 270 more words in Polish than in Hungarian, therefore:

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And that I speak for 5 minutes, we know that the speed of words in Hungarian is 150 and in Polish it is 190, therefore:

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Thus we have two equations and two unknowns, that is, it has a solution, replacing P:

5 = H / 150 + (H +270) / 190

5 = (190 * H + 150 * H + 270 * 150) / (150 * 190)

5 * 150 * 190 = 340 * H + 270 * 150

H = (5 * 150 * 190 - 270 * 150) / 340

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In Polish it would be:

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To check we have to:

300/150 + 570/190 = 5

Therefore, Sakura giving the instructions said 300 words in Hungarian and 570 in Polish.

8 0
3 years ago
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Step-by-step explanation:

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earnstyle [38]

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6 0
4 years ago
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